From d71a222f7631520bf138f2a6dc436f7b528ece04 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABtan=20Trellu?= <gaetan.trellu@gmail.com>
Date: Tue, 12 Dec 2023 09:48:18 -0500
Subject: [PATCH] [common] Implement WSL2 validation check #34

---
 setup.sh           |  1 +
 tests/bats/os.bats | 21 ++++++++++++++++++++-
 utils/common.sh    | 13 +++++++++++++
 utils/constants.sh |  1 +
 4 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/setup.sh b/setup.sh
index 25468765..5de59932 100644
--- a/setup.sh
+++ b/setup.sh
@@ -34,6 +34,7 @@ detect_user
 delete_log
 detect_existing_instance
 get_os_information
+wsl2_requirements
 detect_cpu_instructions
 is_raspeberrypi_soc
 detect_sound
diff --git a/tests/bats/os.bats b/tests/bats/os.bats
index 09cfdc04..d96cc550 100644
--- a/tests/bats/os.bats
+++ b/tests/bats/os.bats
@@ -7,9 +7,14 @@ function setup() {
     load ../../utils/common.sh
     LOG_FILE=/tmp/ovos-installer.log
     OS_RELEASE=/tmp/os-release
+    WSL_FILE=/tmp/wsl.conf
     cat <<EOF >"$OS_RELEASE"
 VERSION="39 (Workstation Edition)"
 ID=fedora
+EOF
+    cat <<EOF >"$WSL_FILE"
+[boot]
+systemd=true
 EOF
 }
 
@@ -54,6 +59,20 @@ EOF
     unset uname
 }
 
+@test "function_wsl2_requirements_valid" {
+    WSL_FILE=/tmp/wsl.conf
+    KERNEL="5.15.133.1-microsoft-standard-WSL2"
+    run wsl2_requirements
+    assert_success
+}
+
+@test "function_wsl2_requirements_no_valid" {
+    truncate -s 0 "$WSL_FILE"
+    KERNEL="5.15.133.1-microsoft-standard-WSL2"
+    run wsl2_requirements
+    assert_failure
+}
+
 function teardown() {
-    rm -f "$OS_RELEASE" "$LOG_FILE"
+    rm -f "$OS_RELEASE" "$LOG_FILE" "$WSL_FILE"
 }
diff --git a/utils/common.sh b/utils/common.sh
index 0bf12d2a..ff4b41a1 100644
--- a/utils/common.sh
+++ b/utils/common.sh
@@ -298,3 +298,16 @@ function in_array() {
     echo "$needle is an unsupported option" &>>"$LOG_FILE"
     on_error
 }
+
+# This function validates basic requirements for Windows WSL2 such as systemd
+# handles the boot process, etc...
+function wsl2_requirements() {
+    if [[ "$KERNEL" == *"microsoft"* ]]; then
+        echo -ne "➤ Validating WSL2 requirements... "
+        if ! grep -q "systemd=true" "$WSL_FILE" &>>"$LOG_FILE"; then
+            echo "systemd=boot must be added to $WSL_FILE" &>>"$LOG_FILE"
+            return 1
+        fi
+        echo -e "[$done_format]"
+    fi
+}
diff --git a/utils/constants.sh b/utils/constants.sh
index ae777c3f..11d8d8db 100644
--- a/utils/constants.sh
+++ b/utils/constants.sh
@@ -39,5 +39,6 @@ export SCENARIO_ALLOWED_HIVEMIND_OPTIONS
 export SCENARIO_NAME="scenario.yaml"
 export SCENARIO_PATH=""
 export USER_ID="$EUID"
+export WSL_FILE=/etc/wsl.conf
 export YQ_BINARY_PATH=/tmp/yq
 export YQ_URL="https://github.com/mikefarah/yq/releases/download/v4.40.3"